ANALYSES OF THE GRASSES. 81 



XT. The Carices form another family of coarse grasses, in which the species are very numerous. 

 I subjoin a single analysis of a Carex, a coarsish swamp grass, cut before the spikes had 

 appeared. 



Per centum. 



Silex 51-250 



Phosphates of lime and iron .... 2 '600 



Chlorine 0-560 



Carbonate of lime ..... 3-500 



Magnesia 0-400 



Potash 26-060 



Soda 4-065 



Sulphuric acid 3-755 



Carbonic acid 6-170 



98-190 



XII. PANICUM CRUS-GALLI (Cocksfoot grass). 



Grown in the yard of the Old State House : height about 3 feet, in flower. 100 grs. of 

 the plant, nearly dry, gave 



Per centum. 



Water 4-737 



Dry matter 95-263 



Ash 11-479 



Ash calculated dry 12-049 



100 grs. of ash gave the following results : 



Per centum. Elements removed in one ton of dry hay. 



Silicic acid 17-325 45-777 lbs. 



Coal - - - ' - - - 1-850 4-995 



Phosphates : 



Phosphate of iron - - 0-325 



Lime .... 0-625 



Magnesia - - - 2 "831 



Silicic acid - - - 0-625 



Phosphoric acid - - 6-894 



11-300 30-510 



Lime 3-060 8-262 



Magnesia 2-618 7-068 



Potash 36-656 93-971 



Soda 1-885 5-089 



Chloride of sodium .... 5-723 15-452 



Sulphuric acid 8-524 S. 23-015 



Carbonic acid and organic matter not obtained. 



[Agricultural Report — Vol. ii.] 11 



